Ceiling Transport Teaching Unit Flange Dynamics
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Solution Overview
Problem
Conventional overhead transport vehicle systems face challenges in accurately performing teaching operations due to flange separation or displacement from the holding unit when detection units contact positioning members, resulting in unstable holding and inaccurate teaching.
Innovation Solution
The system incorporates a teaching unit with a flange movable up and down relative to its body, held by a holder that can be raised and lowered by an elevator, and an operation detector to recognize the teaching level, ensuring stable holding and accurate teaching even under impact loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the detection units are brought into contact with the positioning members during teaching, then the position of the positioning members can be detected, but the teaching unit moves up and down due to impact load, causing the flange to be separated or displaced from the holding unit
Solution Approach 1:
The flange is designed to be movable relative to the body through a movable mechanism, allowing it to dynamically adjust its position. When the detector contacts the positioning pin, the flange can move independently to absorb impact forces, preventing separation from the holder while maintaining detection accuracy.
Solution Approach 2:
The teaching unit is divided into separate components: the body, the flange, and the movable mechanism connecting them. This segmentation allows the flange to move independently relative to the body, enabling impact absorption without affecting the overall structural integrity or detection function.
2Reliability
If the flange is held firmly by the holder to prevent separation, then holding stability is improved, but the teaching unit cannot accurately detect the teaching level under impact loads
Solution Approach 1:
The movable mechanism enables the flange to dynamically respond to impact forces during detection. This dynamic capability allows the system to maintain both stable holding (through the holder-flange connection) and accurate detection (through the detector's ability to sense position changes despite movement).
Solution Approach 2:
The movable mechanism acts as an intermediary between the holder and the flange, mediating the transmission of forces. It allows the holder to provide stable support while enabling the flange to move independently for accurate position detection under impact conditions.
Data Source
AI summary
An overhead transport vehicle system includes an overhead transport vehicle to convey an object, and a teaching unit to teach transfer of the object by the overhead transport vehicle to a load port on which the object is to be placed. The teaching unit includes a body including a detector to be brought into contact with a positioning pin on the load port to detect a position of the positioning pin, and a flange movable up and down with respect to the body and to be held by a holder to be raised and lowered by an elevator of the overhead transport vehicle.